November 13, 2014 When constrained by the zero lower bound, some central banks have communicated a threshold that must be met before short-term interest rates would be permitted to rise. Simulation results for Canada show that forward guidance that is conditional on achieving a price-level threshold can theoretically raise demand and inflation expectations by significantly more than unemployment thresholds. This superior performance is attributable to the fact that the price-level threshold depends on past inflation outcomes. In practice, however, history-dependent thresholds such as this might be more challenging for central banks to communicate.
A measure of the neutral policy interest rate can be used to gauge the stance of monetary policy. We define the neutral rate as the real policy rate consistent with output at its potential level and inflation equal to target after the effects of all cyclical shocks have dissipated.